The use and technology of a compressed file
1 At present our computer is measured in byte, but in fact the smallest unit of measurement in the computer is bit. We know 1byte = 8bit
2 Simply put, there will be a lot of "space" in the file, not fully filled, and the compression of the technology is to fill these "space", so that the capacity of these files to take down. Since compressed files cannot be used
The purpose and technology of a compressed file 1 currently our computer uses byte for measurement, but in fact the smallest unit of measurement of the computer is bit. We know that 1 byte = 8bit2 in simple terms, there will be a lot of ldquo; Space rdquo; in the file, not completely filled
I. usage and technology of compressed files
1 Currently, our computer uses byte for measurement, but in fact the sma
first, the Linux file structure a file structure is a method of organizing files on storage devices such as disks. Mainly embodied in the organization of files and directories. The directory provides a convenient and effective way to manage files. Linux uses a standard directory structure that, when installed, has crea
first, the Linux file structureA file structure is a method of organizing files on storage devices such as disks. Mainly embodied in the organization of files and directories.The directory provides a convenient and effective way to manage files.Linux uses a standard directory structure that, when installed, has created a file
Linux obtains information about the file system (Disk information) and linux system.
The source code is as follows:
# Include
Summary:1. struct statfs struct information reference: http://blog.csdn.net/u011641885/article/details/469190272. Use the float type for fileSystem
Linux Disk Management(1) Create a disk partitionFdisk/dev/sdaSubcommand: P Print disk partition informationD Delete PartitionN New PartitionW Save and exitT modify partition IDL The partition ID of the list(2) Create a file system on a new partition, a management tool for user spaceMKFS.EXT2 DeviceMke2fs-t ext3-b 1024-m 3-l ' volume label '/dev/device Explana
Linux system ArchitectureLinux systems are typically made up of 3 main parts:kernel (kernel), command interpreter (shell or other operating environment), application (application or utility)Kernel of the 1.Linux system650) this.width=650; "Src=" https://s3.51cto.com/wyfs02/M01/8F/62/wKiom1jcpALh3qY3AAKI9TKQGbk685.png-wh_500x0-wm_ 3-wmp_4-s_1441097172.png "title="
The basic purpose of the file systemIs the storage resource that represents and organizes the system.File treeInverted treeOrganization of the file tree/bin, minimum system operability command/boot, kernel and kernel load the required files/etc, critical startup files and configuration filesHome directory for the userWait a minutePath nameAbsolute pathRelative pa
The tools provided by Vedon are directly used here.The Yaffs file system is a file system dedicated to NandflashWe have already downloaded the Yaffs source code, also did the file system directory construction.In YAFFS2 's source
You see these words when you use the command Ls-la under Linux, and these words are expressed as permissions for different groups of users:-r-xr-x--x
1 File Operation rights
R:read is read permission--the number 4 means
w:write is write permission--the number 2 means
X:excute is the execution permission--the number 1 indicates
2) User Rights
There will be a total of 10 characters,
The 1th represent
1 PrefaceThe first commitment: for users migrating from the Windows system, the "Linux system can be plagued by the system files and user files to the C-drive and the D-disk " problem can also be satisfactorily resolved.The previous article had a rough introduction to the Linux
This article introduces a so-called "patron saint of Linux file Systems", which is a program module that can observe the changes in the Linux file system in real time. It is very interesting and important to be able to observe the changes of the
Tags: Linux file type Linux file systemFile systems for Linux:With file system (ROOTFS)Root filesystemLsb,fhs:linux Release Standard1 bin Boot Dev etc home lib lib64 media mnt opt proc root run sbin SRV sys tmp usr var/boot: Boot
Tags:mntsys bytes interfaces current directory Related icegesimage The main partitioning mechanism has MBR and GPT two MBR partitions: The first sector is the most important, with the following: The boot code (Bootstrap codes area) and the partition table (partition table), where Bootstrap code area occupies 446 bytes, and Partition table occupies 16*4 bytes, know the start and end magnetic column of the divider, the last two bytes is the boot identity 55h and AAH can only use a hard disk not
Reading Notes (8): Linux disk and File System Management (1), Linux private dish
The most traditional Disk File System in Linux is EXT2 (of course, it has now been upgraded to EXT4). Th
) and the partition table (partition table), where the MBR occupies 446bytes and partition table occupies 64 bytes GPT Partitioned tables can support more than 2TB of disk capacity in addition to a larger number of partitions.
Linux's Orthodox filesystem for EXT2 (Linux second extended file system, EXT2FS)
A data that can be mounted is a
The following two articles are very good articles on the RAMDisk file system in the ARM9 forumToday did a test, let Linux2.6.29.4 from the RAMDisk root file system to start a successful, summed up.It involves more content, a lot of things no longer detailed, for further study please consult the relevant information (Ba
Linux is the most traditional disk file system is EXT2 (of course, has now been upgraded to EXT4), this chapter mainly introduces the Linux disk File system, and this article focuses on the Li
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